Need advice on how to achieve this hair color with henna?

Hi guys! So I've hennaed my hair once before, about 4 months ago. I used Red Raj for 6 hours over hair that I had been dying blonde for the past 2 years or so, and haven't used any kind of color products on it since. Here is my hair as of now;

http://i62.tinypic.com/i6mvtg.gif
(Eek, those roots- my natural hair color is actually light brown, that really dark-looking section is a result of using the henna on the light brown, virgin parts when I was dying the rest of my blonde hair. So, yes, there's gonna be a two-tone effect going on for a while as I grow out the damaged, previously blonde bits, yaaay. ) Also, this picture was taken in front of a window when the sun was shining, so it's more vibrant looking than usual.

Anyways, on to the question. Alaina Huffman (as Abaddon on the TV show Supernatural) is my hair inspiration. Her character is actually the reason I decided to go with Henna in the first place, and I don't regret it at all because it's done wonders for my fine, damaged hair, but I'm just not currently at the color I'm striving for. Here are some pictures of my goal (keep in mind that she's a natural blonde, so she did somehow achieve this color via dyes)

http://24.media.tumblr.com/25404fb7c...5o2_r1_400.gif
http://25.media.tumblr.com/4d0cc95d7...wc99o2_400.gif
http://i59.tinypic.com/j6ordk.jpg
http://i57.tinypic.com/m90t3q.jpg

So, do you guys think this (or at least something relatively similar to it) is achievable with only henna? I'm open to other dye suggestions too, I suppose, if henna alone won't cut it. Mainly, I want to stay away from the really burgundy, coca cola red type color. I want it to look natural, y'know? Should I use Henna Sooq's Red Raj again (maybe leave it on for only 3 hours this time) or will that only make it more violent cheeto orange? Thanks in advance for any advice!

Henna only will definitely give you something close to this color but..... If your natural hair is brown then it will only darken it. Some people lighten their roots with sun in then henna on top to achieve a redder color. The more you apply henna the darker your hair will get, but I don't think it will get that cherry cola color that you hate without adding indigo. I tried that once and I looked terrible (as in my avatar) I am naturally a strawberry blond. That is gone now and I try to keep it as light as possible. I use any henna I can get my hands on and never really had a problem and I don't see why you need a high Lawson content henna if you don't want it to be really dark. Every application will get your hair darker whoever henna you use, it just might darken faster with Rajastani henna. Hope I was able to answer some of your questions:)happy henna

I have natural medium/dark brown hair, and really didn't want to go darker, but I used hendigo and it really didn't darken my hair very much. It just gave me that reddish glow that henna is famous for. I only did one application on the lengths, but I reapply to my roots every month or so. A couple of times a year, I reapply a hendigo gloss to the length, if I feel it needs refreshing.
I think it would be difficult even for someone who has lots of experience with plant dyes to predict exactly what the precise results will be on any individual. Because the plants are applied to your hair, and your hair is individual. Test strands on your hair is really the only way to exactly predict what results you will get with different formulas and processes.